2 Answers

I had the same problem...in my case I had a key made at a local hardware store. They made the key and used the wrong blank(had wrong chip). When I used that key the theft deterent system kicked in. What you can do is measure the resistance of your chip (it is just a resistor) and solder it into the wiring under the steering wheel. I did it and it works fine.

Actually the reason I soldered the resistor in was that my car started failing to read the original keys for the car. The contacts that read the chip were bad....anyway now all my keys work. The downside is now the theft deterent of the chip is disabled. My car is a 97 and I just wish someone would steal it.

Let me know if you are going to try bypassing the "chip" and I will find the article that showed me how.

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If you know how to solder, you can try building up the "chip" area on the key and reinserting it. That's the only thing that controls the PASSLOCK theft system.

Measure the resistance from one of the contacts to the other with an ohmmeter, and you can get those keys from eBay. Once you get the car home, order one for a couple bucks, and get it cut at your local hardware store.

When you order the new key, they will ask you for the resistance measurement across the resistor embedded in the key, and send you one that matches.

If you'd rather order one from the dealer, they are still available last I checked, but were significantly more expensive than the eBay option.

I've got an even cheaper and easier solution, instead of buying a new cylinder, find that plug and snip the orange wires going to the old cylinder.Then remove the resistor chip from the key and solder each of the the wires to each side. this will fool the car into thinking the correct resistor chip is in place, allowing you to use the original key or any copies with or without resistor chips. i just did this to my caddy and it roared to life! :)

Get a new cylinder put old key with chip in it. Find orange wire from old lock cylinder at bottom of steering column just under dash. Disconnect and connect new wire from new lock cyl. Get a copy of the old key for the old lock cylinder {no chip needed} to start car. Hide or mount new lock cylinder hidden under dash. Remove chip key to activate theft system.

probably needs a new ignition cylinder, the wires for the pass key chip inside the column tend to break after a while. i have repaired the wires in the past, but it is actualy better to replaced the assembly, you will also need to get new keys cut for the new cylinder, who ever cuts the keys will also need one of the old keys to check what pass key chip that you need.